The Bow-Stern Mount is USM's specialty mount, sharing the same platform as the COMPACT. Similarly, this model is recommended for systems with Z-Pole lengths up to 7', bearing loads up to 45lbs.
Just like theCompact,Megatower, andXL, the Bow-Stern uses a vertical lead-screw mechanism called theShear Block Tower to engage and disengage the Z-Pole, also serving as a breakaway safety feature in the event of a collision.